Selectaglaze overcome listing restrictions to make historic university safe and warm

Main image: The Aston Webb buildings, Chancellor's Court, University of Birmingham. Photograph by Gavin Warrins - Wikipedia Commons

Associated Architects was commissioned to refurbish the University of Birmingham and called in Selectaglaze for its expertise in secondary glazing

The University of Birmingham was awarded a Royal Charter in 1900, making it one of the first redbrick universities in England. It encouraged people from all backgrounds, religions and gender to attend on an equal basis.

Aston Webb and Ingress Bell began work on a construct of buildings in 1901 to include; a great hall and a semi-circular block of buildings for the mechanical engineering department. Their previous designs included the main façade of Buckingham Palace and the main building of the V&A.

Aston Webb Great Hall and the Quadrant Range was granted Grade II* Listing in 1970, as a grand example of Victorian design and engineering with its domed roofs and a sweeping curved façade.

Associated Architects was commissioned to sensitively refurbish the exterior and to redesign and renovate the interior of Block C, creating new space to accommodate a large lecture theatre, student services and support hub. Part of this refurbishment included the introduction of new mezzanine floors, which sit on par with the break lines of the large primary windows, increasing the number of floors from three to five.

To make the building a warmer and more comfortable learning space, replacing the draughty and unsecure primary windows with new double glazing was considered. However, as the building is of architectural interest and has a Listed status, consent could not be obtained. Instead, all the original primary windows were removed, stripped, repainted and re-glazed like for like. Although restored, the single glazed units were still inefficient, so Selectaglaze was specified to provide a solution with its secondary glazing.

The design specification was very arduous, with the secondary glazing required to provide noise reduction of 45 – 48dB; seal the envelope of the building achieving air leakage of less than 5m3/m2/hr (half that of the current building regulations); provide protection from falling at the edge of the new floors and improve the thermal retention by lowering the U-value to 1.9w/m2K.

Over 200 units were installed with varying designs and styles, many of which were curved to suit the building. In the lecture theatre there is a series of large 2.3m wide 3.8m high openings which were treated with a combination of fixed lights from the Series 42 range and horizontal sliders from the Series 80 heavy duty range. In the office area there is a curved opening which stands at over 6m wide and 2.8m high which was treated from the Series 42 fixed light and Series 41 side hung casement ranges.

All of the secondary glazed units are bespoke to the window openings ensuring the tightest fit and match sight lines wherever feasible to make the them virtually unnoticeable from the exterior. All units are fully assembled in the factory allowing for rapid installation.

Selectaglaze has 50 years’ experience working on all types of buildings from domestic properties to new build hotels. Selectaglaze offers a technical advisory service along with RIBA approved CPDs to make sure that the right product is used for the maximum benefit – ensuring the building is warmer, quieter and safer.